Different Clinical Courses of Two Congenital Perineal Lipomas in Female Neonates

Takeuchi Yuta, Inoue Seiichiro, Odaka Akio, Muta Yuki, Kikuchi Jun, Beck Yoshifumi, Kabe Kazuhiko, Baba Kazunori

doi:10.11164/jjsps.56.7_1099

<p>We report two cases of congenital perineal lipoma diagnosed prenatally in female neonates. A female neonate weighing 3,442 g was referred to us for the evaluation of congenital perineal tumor. A fetal perineal mass was detected by fetal ultrasonography at 19 weeks of gestation. She was delivered at 40 weeks and 5 days of gestation. A perineal tumor with pedicule attached to the left side of the anal margin was observed. Another female neonate weighing 3,462 g was referred to us for the evaluation of congenital perineal tumor. A fetal perineal mass was detected by ultrasonography at 30 weeks of gestation. She was delivered at 41 weeks and 3 days of gestation. The perineal tumor extended to the labium majus. She presented with a middle anorectal malformation.</p><p>In both patients, the perineal mas was excised 1 month after birth. In the second patient, anorectal malformation repair was performed at 6 months after birth. The histopathological findings showed a lipoma in both patients. Part of the lipoma tended to have vascular tissues and nerves. In the second patient, the lipoma was also observed to have cartilage tissue. In both patients, good progress was obtained by surgical removal. The second patient is doing well and has been defecating spontaneously during four years of follow-up.</p>

Different Clinical Courses of Two Congenital Perineal Lipomas in Female Neonates

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